South Korea’s spy agency says North Korea has sent 1,500 special forces troops to Russia for training and likely deployment for combat in the war in Ukraine. The allegation comes a day after Ukrainian President Volodymyr Zelensky said he believed 10,000 North Korean soldiers could join the war, based on intelligence information. The U.S. expresses concern. We talk with VOA National Security Correspondent Jeff Seldin and Naoko Aoki, a political scientist at RAND.